The BNP leader said Detective Branch (DB) picked him up from a house in Mohammadpur area of the capital around 3:30am.
Quoting family members, Rizvi said, "Mujibur Rahman Sarwar was picked up late at night by law enforcers in plainclothes.”
The BNP leader condemned the arrest of Sarwar.
However, Chief of Dhaka Metropolitan Police's Detective Branch Additional Commissioner Harun-Or-Rashid could not be reached for a comment in this matter.
A former MP, Mujibur Rahman, also served as mayor of Barishal City Corporation.
Earlier on Friday, BNP standing committee member Amir Khasru Mahmud Chowdhury and media cell convener Zahir Uddin Swapan were picked up from Gulshan at around 12:30am.
